Abstract
Abstract 1. Mono-, di-, and trimethylamine when treated with benzyl and tolyl mercaptan give disufides ; on the other hand, thioglycolic acid gives the monosulfide. 2. Aniline and diphenylamine do not react with mercaptans or organic sulfides. 3. Mono-, di- and trimethylamine react with organic polysulfides. The tri- and tetrasulfides of the tolyl and benzyl series give disulfides by desulfurization. The glycolic acud sulfides are desulfurized to monosulfide. 4. The relative desulfurization activities of mono-, di- and trimethylamine are (CH3)3N < CH3NH2 < (CH3)2NH. This order is the same as for the basicity of these amines. Aromatic amines, because of their weak basicity, do not react with organic polysulfides. 5. The relative ease of desulfurization is in the order glycolic acid > benzyl > tolyl. The more sulfur a polysulfide contains, the more readily it desulfurizes. The mercaptan to disulfide reaction rate is faster than desulfurization of polysulfides.
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